Abstract: According to an embodiment, a cooling device for cooling a constituent element housed in a housing of a unit subjected to an influence of a generated magnetic field includes a water cooling mechanism and at least one air cooling mechanism. The water cooling mechanism cools the constituent element by cooling a cooling plate with a flow of water flowing through a pipe passing through the cooling plate arranged in the housing. The air cooling mechanism is arranged on an outgoing side where the flow of water flowing through the pipe is outgoing from the housing and cools the constituent element by discharging air in the housing along with the water flow in accordance with the water flow.

Abstract: A method of machining a plurality of workpieces in an unmanned manner, including the steps of holding, with a jig, a first one of the workpieces, attaching the jig holding the first workpiece, to a workpiece holding device of at least one machining device, so that the first workpiece is machined by the machining device, detaching, after the machining of the first workpiece, the jig holding the first workpiece, from the workpiece holding device, removing the first workpiece from the jig, and holding, with the jig, a second one of the workpieces, and repeating the attaching step, the detaching step, and removing step.

Abstract: A method of machining a plurality of workpieces in an unmanned manner, including the steps of holding, with a jig, a first one of the workpieces, attaching the jig holding the first workpiece, to a workpiece holding device of at least one machining device, so that the first workpiece is machined by the machining device, detaching, after the machining of the first workpiece, the jig holding the first workpiece, from the workpiece holding device, removing the first workpiece from the jig, and holding, with the jig, a second one of the workpieces, and repeating the attaching step, the detaching step, and removing step.

Abstract: An apparatus for breaking chips into fragments, including an outer structure which is fixedly provided such that a center line of the outer structure is parallel to a reference direction having a vertical component, an inner structure which is provided inside the outer structure such that the inner structure is concentric with the outer structure, a rotary drive device which rotates, in a rotating direction, the inner structure about the center line, and the inner structure including a central portion which is concentric with the outer structure, and a plurality of blades which extend radially outwardly from an outer circumferential surface of the central portion and each of which is inclined relative to the rotating direction such that a lower surface of the each blade can be seen as viewed from a downstream side of the each blade in the rotating direction.

Abstract: A method of machining a plurality of workpieces in an unmanned manner, including the steps of holding, with a jig, a first one of the workpieces, attaching the jig holding the first workpiece, to a workpiece holding device of at least one machining device, so that the first workpiece is machined by the machining device, detaching, after the machining of the first workpiece, the jig holding the first workpiece, from the workpiece holding device, removing the first workpiece from the jig, and holding, with the jig, a second one of the workpieces, and repeating the attaching step, the detaching step, and removing step.

Abstract: A chip compressing apparatus, including a housing which has an inner space having opposite open ends, a movable member which is movable, along one of the opposite open ends of the housing, to a closing position where the movable member closes the one open end of the housing and to an opening position where the movable member opens the one open end, a movable-member moving device which moves the movable member to the closing position and to the opening position, a compressing ram which is inserted in the inner space of the housing through the other open end thereof, such that the compressing ram is movable in an axial direction of the housing, a ram moving device which moves the compressing ram in the axial direction so that the ram cooperates with the housing and the movable member being positioned at the closing position to compress metallic chip which is stored in the inner space of the housing, and a supporting device which supports the housing and the movable member such that at least when the compressing

Abstract: A cutting tool, including a main portion having a tip-hold surface, and a tip which has a cutting edge and which is detachably attached to the main portion such that the tip is held in close contact with the tip-hold surface of the main portion, the tip having a tip-side mist hole which is formed through the tip and which has an inlet in a surface of the tip that is held in close contact with the tip-hold surface of the main portion, and an outlet in a portion of the tip that is located in a vicinity of the cutting edge, the main portion having a main-portion-side mist hole which is formed through the main portion and which opens, in the tip-hold surface, at a position aligned with the inlet of the tip-side mist hole of the tip attached to the main portion.